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Pseudo ground
Pseudo ground
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Old 3rd February 2013, 08:57 PM   #1
argonrepublic is offline argonrepublic  Canada
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Join Date: Apr 2005
Location: Simcoe Ont
Default Pseudo ground

I vaguely remember a power supply I used a few years ago for +/-15V. I am trying to get some power today and the closest transformer I have, has no center tap.
Here is a picture of the power board but I am contemplating leaving this out of the system until I am able to locate a suitable transformers. I have plenty of rectifiers, capacitors, regulators etc. I need +/-15 VDC and 5 VDC. I have a transfor that has 35VAC and 7.5VAC
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Old 4th February 2013, 06:08 AM   #2
metalsculptor is offline metalsculptor  Australia
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Depends on the load If the DC ground current is minimal the a voltage divider between the rails and a bypass capacitor will work
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Old 4th February 2013, 06:42 AM   #3
gootee is offline gootee  United States
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There is a power rail-splitter circuit in the LM675 datasheet.
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